Bombtrack Hook EXT SX Eagle
Built for control and confidence on any terrain, the flat bar Hook EXT SX Eagle combines rugged performance with everyday versatility. Its double-butted chromoly frame features a tapered headtube and T47 bottom bracket for durability and responsive handling. Up front, a full carbon fork with triple cage mounts and internal hub dynamo routing boosts your bikepacking potential. The SRAM SX Eagle 12-speed drivetrain with an 11–50T cassette and 38T chainring mounted to a Rival wide chainset delivers a wide gear range while keeping an efficient road q-factor. Rolling on tubeless-ready WTB ST Light i25/i23 rims and WTB Ranger TCS Light tires, this flat bar setup gives you off-road traction with on-road agility—ready for whatever path you choose.
Frame & Fork
- Color: Matt desert green
- Frame: Columbus Cromor double butted, TA, rack / fender mounts, internal light cable routing, rear light mount, ED coating, 85.5 mm T47 BB shell
- Fork: Bombtrack EXT full carbon, TA, 1.1/2'' - 1.1/8'', fender / triple cage mounts, internal hub dynamo cable routing
Drivetrain & Shifting
- Rear derailleur: Sram SX Eagle, clutch, long cage
- Chain: Sram NX Eagle chain, 1/2'' x 11/128'', 114L
- Cassette: Sram PG-1210 Eagle 12-speed, 11 - 50 T
- Crankset: Sram Rival Wide, DUB spindle
- Chainring: Sram Rival, 12-speed, 38 T
- Bottom bracket: Sram DUB T47 85.5 mm
Wheels & Tires
- Front hub: Bombtrack Tau sealed hub, 6-bolt disc
- Rear hub: Bombtrack Tau sealed hub, 11-speed HG body, 6-bolt disc
- Through axles: 12 x 100 mm / 12 x 142 mm
- Front rim: WTB ST Light i25 double wall, TCS 2.0, 32h
- Rear rim: WTB ST Light i23 double wall, TCS 2.0, 32h
- Front tire: WTB Ranger TCS Light / Fast Rolling 27.5'' x 2.0'', tubeless ready
- Rear tire: WTB Ranger TCS Light / Fast Rolling 27.5'' x 2.0'', tubeless ready
Cockpit
- Handlebar: Bombtrack Trail flat bar, 31.8 mm, 9° backsweep, 4° upsweep, 7 mm rise
- Grips: Bombtrack Tab 129 mm grips
- Stem: Bombtrack Roam forged aluminium stem, -7°
- Headset: Sealed external aheadset, 1.1/2'' - 1.1/8''
Seats & Seatpost
- Seat: Bombtrack Comp seat
- Seat post: Bombtrack Yew aluminium seatpost, 27.2 mm x 300 mm
- Seat clamp: Bombtrack Origin 29.8 mm
Brakes
- Brake levers: Sram Level hydraulic
- Brakes: Sram Level hydraulic disc brakes
- Rotors: Sram G2 Cleansweep 160 mm rotors
Weight & Limits
- Complete weight: 11.6 kg (size L)
- Weight frame: 2710 g frame (size L, incl. TA, hanger)
- Weight fork: 600 g fork (300 mm steerer, incl. TA)
- Maximum rider weight: 130 kg incl. Luggage
- ASTM riding condition: 2
Built for control and confidence on any terrain, the flat bar Hook EXT SX Eagle combines rugged performance with everyday versatility. Its double-butted chromoly frame features a tapered headtube and T47 bottom bracket for durability and responsive handling. Up front, a full carbon fork with triple cage mounts and internal hub dynamo routing boosts your bikepacking potential. The SRAM SX Eagle 12-speed drivetrain with an 11–50T cassette and 38T chainring mounted to a Rival wide chainset delivers a wide gear range while keeping an efficient road q-factor. Rolling on tubeless-ready WTB ST Light i25/i23 rims and WTB Ranger TCS Light tires, this flat bar setup gives you off-road traction with on-road agility—ready for whatever path you choose.
Frame
- BB standard: T47 - 85.5 mm shell width
- Frame max tire clearance w/o fender:
52-584 / 40-622 - Frame front derailleur compatible: yes
- Front derailleur clamp diameter: 28.6 mm
- Brake mount rear: FM 140 / 160
- Maximum rotor clearance rear: 160 mm
- Frame thickness rear brake mount: 10 mm
- Bike trailer: approved
- Seat tube mounted child seat: approved
- ISO testing standard: Road
Fork
- Fork max tire clearance w/o fender:
52-584 / 45-622 - Fork steerer inner diameter: 23.6 mm
- Headset standard (S.H.I.S.):
EC34 / 28.6 | EC44 / 40 - Headset crown race angle: 45°
- Brake mount front: FM 140 / 160
- Maximum rotor clearance front: 160 mm
Drivetrain
- Maximum chainring clearance 1x:
44 T with 45 mm chainline - Maximum chainring clearance 2x:
50 / 36 T with 45 mm chainline - Crankarm:
XS 165 mm
S - M 170 mm
L - XL 175 mm - Q Factor: 150 mm
- BCD crank: 8 bolt direct mount (Sram compatible)
- Chainring offset: 6 mm
- Chainline: 47.5 mm
Seat & Seatpost
- Seat post diameter: 27.2 mm
- Seat post offset: 0 mm
- Seat post length: 300 mm
- Seat clamp diameter: 29.8 mm
Cockpit
- Stem length: 90 mm
- Stem angle: -6°
- Headset spacers: 1 x 10 mm, 2 x 5 mm
Wheels
- Spoke length front wheel: 274 mm, 275 mm
- Spoke length rear wheel: 273 mm, 275 mm
- Spoke count (front / rear): 32 / 32
- Front through axle:
12 mm x 100 mm, 1.5 thread pitch - Rear through axle:
12 mm x 142 mm, 1.5 thread pitch - ERD: 570 mm
- Front hub PCD: 58 mm
- Rear hub PCD: 58 mm
- Front hub flange distance / offset:
56.5 mm center to center / 6.6 mm - Rear hub flange distance / offset:
51 mm center to center / 8.8 mm
Spare Parts
- Derailleur hanger: BT-DH-008
- Frame small parts: BT-CR-007 / BT-CR-006
- Hub end caps front: BT-HC-014
- Hub end caps rear: BT-HC-017
- Cassette body: BT-CB-006
- Through axle front: BT-TA-F-601
- Through axle rear: BT-TA-R-602
Geometry
Frame Bag Templates
Frame Bag Templates
